Tractor linkage hook



FIG. 1 is a side view of a tractor linkage hook showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is an opposite side view of FIG. 1;

FIG. 5 is a front view thereof; and,

FIG. 6 is a bottom view thereof.

FIGS. 1, 3, and 4 include an oval shape with lettering. This feature is shown in broken lines and is disclaimed as part of the claimed invention. 

The ornamental design for a tractor linkage hook, as shown and described. 